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Flashcards in Wrong on Practice Tests Deck (79)
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1

Which occurs during x-ray tube preparation/”boost”?

Anode comes to rotational speed and the preselected milliamperage increases in the cathode filament

2

The latent image in computed tomography is actually _____ within the barium fluorohalide material.

Electron traps

3

Acute radiation syndrome manifests in four major stages. In what order do these stages occur?

Prodromal, latent, manifest, and recovery/death

4

Which structure helps stabilize and support the small intestine?

Mesentery

5

Which clinical indication would suggest the need for a dorsal decubitus abdomen?

Aneurysms, umbilical hernias, and calcification of the aorta

6

CR angle for modified Robert’s method

15° proximally (toward the wrist)

7

A radiograph of a tangential, inferior-superior projection of the carpal canal reveals that the hamate is superimposed over the pisiform. How can this be corrected?

Rotate the wrist and hand 10° internally.

8

Patient has a possibly fractured coronoid process. He cannot fully extend his elbow, what views should be done?

Coyle method with 80° flexion, CR angled 45° away from the shoulder.

9

If the axillary border of the scapula is more lateral than the vertebral border on a Scap Y, what needs to be done to fix it?

Decrease rotation

10

First compensatory spinal curvature to develop

Cervical

11

CR angle for posterior oblique of C-Spine

15° cephlad

12

Thyroid dose of a posterior cervical oblique is how much greater than an anterior oblique?

10

13

Sciatic type pain resulting from a slipped disk indicates:

A herniated nucleus pulposus

14

Angulation for an AP axial L5-S1 is?

Cephlad

15

LPO position of SI joints best demonstrate the right joint?

False

16

LAO position of the sternum provides the best frontal image of the sternum?

False

17

Radiographic appearance of erosion of bony rib margins indicates:

Osteomyelitis

18

The congenital defect characterized by anterior protrusion of lower sternum:

Pectus carinatum

19

How can the image be fixed if the mandibular condyles are projected into the petrous pyramids?

Increase the extension of the skull

20

Where is bile formed?

Liver

21

A stomach with a duodenal bulb at the level of L1-L2 would be found in a ____ patient.

Sthenic

22

Which is the most effective cardinal principle of radiation protection?

Distance

23

The ascending colon and upper rectum are intraperitoneal structures

False

24

Which vein is NOT selected for venipuncture during and IVU?

Axillary

25

All temperatures should be identical regardless of where the temperature is measured

False

26

What two modalities could easily be converted to digital imaging properties?

Ultrasound & Nuc Med

27

Definition of Modulation Transfer Function (MTF)

The sum of the components in a recording system cannot be greater than the system as a whole

28

Amplification of the frequencies of the areas of interest is known as:

Edge Enhancement

29

The layer of the imaging plate that traps electrons during the exposure:

Active

30

When the imaging plate is irradiated, stimulated electrons enter what layer?

Active

31

A detector in which each pixel has its own amplifier is known as:

CMOS

32

What turn semi-conductors into full electrical conductors?

Dopants

33

The system that contains patient info, billing records, and inpatient orders is?

HIS (Hospital Information System)

34

The number of pixels contained on a display is known as:

Resolution

35

Which component of the archive consists of physical storage?

Image Storage & Archive Server

36

Errors in equipment performance are detected by poor:

Quality Outcomes

37

How often should the luminescence of a monitor be checked?

Daily

38

Positioning errors may be the cause of incorrect processing due to mistakes in:

Alignment

39

Best projection to look for an abdominal aortic aneurysm:

Dorsal Decubitus

40

Which projection is best for demonstrating the prevertebral region of the abdomen?

Dorsal Decubitus

41

Radiolysis of positive water molecule make:

H+ and OH*

42

Radiolysis of negative water molecule make:

OH- and H*

43

What are the free radicals that have the ability to break chemical bonds and result in biological damage?

H* and OH*

44

As _____ transfer decreases, RBE decreases

Linear energy

45

Brain tissue is _____ compared to bone marrow

More radioresistant

46

Stage of mitosis in which the nuclear membrane disappears/visibility of the nucleolus is absent

Prophase

47

Most sensitive phase of the cell cycle

Interphase

48

Cross-Linking results in _____ structures

Spur-like

49

SSD should be no less than _____ for mobile fluoroscopes

12"

50

Why is the angle 35 degrees for SI joints for a woman?

Due to the lumbosacral curve

51

What is the angle for SI joints for a male?

30 degrees

52

What is the angle of the neck to the shaft of a femur?

125 degrees

53

What is the degree of obliquity to demonstrate zygopophyseal joints in the T-Spine?

70 degrees

54

To display the zygopophyseal joints of the right side in the lumbar spine, what oblique should be performed?

RPO

55

What are flexion/extension laterals of the spine used to evaluate?

Mobility

56

What is demonstrated on the medial oblique knee?

Proximal tibiofibular joint space

57

What is not a proper flexion for a lateral knee?

20-30 degree flexion

58

What is indicative of an underrotated lateral knee?

Visualization of adductor tubercle

59

What is the purpose of instructing a patient to drop the shoulders during chest radiography?

Move the clavicles inferiorly from the apices

60

What is the best way to image a tumor in the apices of the lungs?

AP lordotic

61

Why would an oblique chest be performed?

To remove superimposed tissue

62

What is the oblique angle to image the heart at?

60 degrees

63

What oblique should a patient be in for right anterior rib pain?

LAO

64

Why is a 15-20 degree RAO preferred for a sternum x-ray?

Places the sternum over the right lung field

65

Which x-ray shows a sunken chest the best?

Oblique sternum

66

Hypersthenic patients require less obliquity for the sternum

True

67

What projection best demonstrates a posterior displaced ankle fracture?

Lateromedial lateral

68

Pes Cavus tube angle

15 degree angle

69

Pes Planus tube angle

5 degree angle

70

For weight bearing unilateral what is important to tell the patient?

Put full weight on affected side

71

Which metatarsal should be captured in an ankle x-ray?

5th

72

What degree of angle will show the the distal tibiofibular space on an internal oblique ankle x-ray?

45 degrees

73

Where is a Zenker Diverticulum found?

Esophagus

74

What is the power source in the United States

6o Hz AC

75

General x-ray, fluoroscopy, and angiography all use what type phase of x-ray systems?

Three-Phase

76

What is the force that accelerates electrons for x-radiation?

kVp

77

What type of radiation makes up 99% of kinetic energy of projectile electrons?

Infrared

78

A decrease in amplitude is a result of a decrease in what x-ray factor?

mA/s

79

Added filtration does what to the intensity of the x-ray produced?

Decreases it